WO2018079960A1 - Dispositif de mémorisation comprenant un secteur de démarrage dans lequel seul un propriétaire peut enregistrer - Google Patents

Dispositif de mémorisation comprenant un secteur de démarrage dans lequel seul un propriétaire peut enregistrer Download PDF

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Publication number
WO2018079960A1
WO2018079960A1 PCT/KR2017/004410 KR2017004410W WO2018079960A1 WO 2018079960 A1 WO2018079960 A1 WO 2018079960A1 KR 2017004410 W KR2017004410 W KR 2017004410W WO 2018079960 A1 WO2018079960 A1 WO 2018079960A1
Authority
WO
WIPO (PCT)
Prior art keywords
flash memory
public key
boot
owner
storage device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2017/004410
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English (en)
Korean (ko)
Inventor
김경모
박용관
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Securityplatform
Original Assignee
Securityplatform
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Securityplatform filed Critical Securityplatform
Priority to US16/344,895 priority Critical patent/US20190258589A1/en
Priority to CN201780065569.8A priority patent/CN109863480B/zh
Publication of WO2018079960A1 publication Critical patent/WO2018079960A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
    • G06F21/57—Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
    • G06F21/575—Secure boot
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
    • G06F12/023—Free address space management
    • G06F12/0238—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory
    • G06F12/0246—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory in block erasable memory, e.g. flash memory
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory
    • G06F12/1408—Protection against unauthorised use of memory or access to memory by using cryptography
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory
    • G06F12/1458—Protection against unauthorised use of memory or access to memory by checking the subject access rights
    • G06F12/1466—Key-lock mechanism
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
    • G06F21/57—Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
    • G06F21/572—Secure firmware programming, e.g. of basic input output system [BIOS]
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/10—Providing a specific technical effect
    • G06F2212/1052—Security improvement
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/20—Employing a main memory using a specific memory technology
    • G06F2212/202—Non-volatile memory
    • G06F2212/2022—Flash memory
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/72—Details relating to flash memory management
    • G06F2212/7208—Multiple device management, e.g. distributing data over multiple flash devices
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/03—Indexing scheme relating to G06F21/50, monitoring users, programs or devices to maintain the integrity of platforms
    • G06F2221/033—Test or assess software

Definitions

  • the present invention relates to the security of a device, and more particularly, to a storage device including a boot area of a device that can improve the security of the device that can be easily exposed to any manipulation or external attack.
  • firmware is the middle of software and hardware, it can be said that the hardware is software.
  • firmware is a high-precision, basic program or data stored in a ROM to improve system efficiency. In a microcomputer, almost all programs are stored in a ROM. It may also refer to.
  • Firmware can replace some of the hardware's functionality with software and is used in many electronic devices because it is very simple and can control or improve the functionality of the device at a fraction of the cost.
  • the firmware since the firmware has a software characteristic, it is subject to hacking or forgery, and thus a method of verifying the firmware with integrity has been developed.
  • the device includes a processing module and a memory module, wherein the memory module includes a ROM in which the platform boot firmware is stored, and the processing module may load the platform boot firmware when the device is activated.
  • the platform boot firmware causes the processing module to load and verify the signature of the hash table loaded from the platform boot firmware and to load the trusted program file first.
  • the processing module then loads the other files from the platform boot firmware, calculates a hash for each file, and verifies whether a hash corresponding to each program file exists in the hash table.
  • Program files with hashes in the hash table may be allowed to run. If no hash corresponding to the loaded program file exists in the hash table, the processing module may prevent the device from being compromised by performing platform specific security actions.
  • the present invention provides a storage device capable of protecting a boot area and a boot process by implementing a security function even without a security module coupled in hardware.
  • the present invention includes a boot area that can be recorded only by the owner, and provides a storage device in which only the owner can manage the boot file.
  • a storage device including a boot area that can be written only by the owner is a controller for controlling read and write, the first device for storing a file for booting A flash memory, and a second flash memory for storing data other than a boot file, wherein the controller reads data recorded in a security unit, a first flash memory, and a second flash memory for storing a public key of the owner; And a first recording unit for recording only the boot file verified by the public key stored in the security unit in the first flash memory, and a second recording unit for recording in the second flash memory.
  • the first flash memory is a part for storing a boot file, and may include a file or data necessary for booting an electronic device.
  • the boot file may be general boot data, boot firmware, or the like.
  • the boot file may be stored in an encrypted image form.
  • a process of verifying or decrypting a signature may be omitted once stored, but in the case of an encrypted image, a public or symmetric key selected by a manufacturer or a carrier or a device administrator may be used. Decryption may be performed at each boot.
  • the second flash memory is generally a memory that can be read and written.
  • the second flash memory may record an executable file, a system file, a document file, a media file, and the like through a second recording unit of the controller.
  • first flash memory and the second flash memory will be described separately, but the first flash memory and the second flash memory may correspond to the case where the first flash memory and the second flash memory are separated only by software.
  • first recording unit and the second recording unit may also exist separately, but the present invention is not limited thereto, and one recording unit separately manages the first flash memory and the second flash memory.
  • the security unit of the controller may store only one public key, and when there is a stored public key, addition of a new public key and deletion of an already stored public key may be restricted so that only one public key may be stored.
  • the stored public key may be restricted to be deleted only by using a corresponding secret key.
  • the storage device of the present invention may be used as a storage device usable with COTS hardware, and may be an embedded multi media card (eMMC), microSD, USB storage device, solid state drive (SSD), or hard disk drive (HDD). .
  • eMMC embedded multi media card
  • microSD microSD
  • USB storage device solid state drive
  • SSD solid state drive
  • HDD hard disk drive
  • Owner in the present specification is a person who has the right to drive the device or the storage device is used to update the firmware, the manufacturer of the device or a person authorized to manage the firmware, etc. from the manufacturer,
  • the device can be purchased from the manufacturer or supplied with the device.
  • the security unit may be provided in an empty state, and the owner may store the public key corresponding to his secret key through the predetermined reader in the security unit.
  • the storage device of the present invention does not have a security module hardware-coupled to the electronic device, a function corresponding to the security module can be added to the controller of the storage device to protect the boot area and the booting process of the device.
  • the storage device of the present invention provides a boot area that can be recorded only by the owner, so that only the owner can manage the boot file and can protect a device from random manipulation or hacking by a third party.
  • the owner of the boot area can manage the COTS hardware that supports the micro SD card, etc. as a storage device for booting, so that a security module combined with hardware can be implemented. In this way, security can be secured against hacking from the outside.
  • FIG. 1 is a view for explaining a storage device according to an embodiment of the present invention.
  • FIG. 2 is a diagram for describing the controller of FIG. 1 in detail.
  • Figure 1 is a view for explaining a storage device according to an embodiment of the present invention
  • Figure 2 is a view for explaining the controller of Figure 1 in detail.
  • the storage device 100 may provide a booting function such as an embedded multi media card (eMMC), a microSD, a USB storage device, a solid state drive (SSD), or a hard disk drive (HDD). It can be described including all storage devices. Although the present embodiment will be described based on the micro SD card, those skilled in the art can apply the structure of the storage device having a similar function in other embodiments based on the following description.
  • eMMC embedded multi media card
  • microSD microSD
  • USB storage device a solid state drive
  • HDD hard disk drive
  • the storage device 100 of the present embodiment includes a controller 110, a first flash memory 120, and a second flash memory 130, and the controller 110 includes a reader unit 112, a security unit 114, The first recording unit 116 and the second recording unit 118 may be included.
  • the controller 110 is to control reading and writing to the flash memory of the same storage device, and may receive data from a mounted device (not shown) or transmit necessary data.
  • the controller 110 may transmit and receive data stored in the flash memory as it is, and may transmit and receive data through a constant conversion or processing.
  • the security unit 114 of the controller 110 may store the owner's public key. In manufacturing, the security unit 114 may be provided without storing any unique key, and through a separate reader, an owner may store a public key corresponding to a secret key possessed by the desired reader.
  • the security unit 114 may store only one public key, and once the public key is stored, a third party who is not an owner may limit the deletion or replacement of the public key. It is preferable to delete only by using a secret key of, and it is possible to allow a newly added public key to be added in a deleted state.
  • the first recording unit 116 may be provided separately from the second recording unit 118, and the signature is verified using the stored public key before storing the boot file in the first flash memory 120, and the verified boot Only the use file may be stored in the first flash memory 120.
  • the file that cannot be verified cannot be written to the boot area, that is, the first flash memory 120, so that only the file that the owner intends to write can be written to the boot area.
  • the second flash memory 130 may also allow or restrict writing depending on the setting.
  • the reader unit 112 may read data recorded in the first flash memory 120 and the second flash memory 130, and in this case, signature verification of the public key may not be required.
  • the first flash memory 120 may store only the file verified by the security unit 114, and the second flash memory 130 may be stored without verification unlike the first flash memory 120. Do.
  • the boot file stored in the first flash memory 120 may be general boot data, boot firmware, or the like.
  • the boot file may be stored in an encrypted image form. Therefore, in the case of a general boot file or firmware, a process of verifying or decrypting a signature may be omitted once stored, but in the case of an encrypted image, a public or symmetric key selected by a manufacturer or a carrier or a device administrator may be used. Decryption may be performed at each boot.
  • the second flash memory 130 is a memory which can generally be read and written, and can record an execution file, a system file, a document file, a media file, etc. through the second recording unit of the controller.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • Storage Device Security (AREA)
  • Stored Programmes (AREA)

Abstract

L'invention concerne un dispositif de mémorisation comprenant un secteur de démarrage dans lequel seul un propriétaire peut enregistrer comprenant : un dispositif de commande permettant de commander la lecture et l'écriture ; une première mémoire flash permettant de mémoriser un fichier de démarrage ; et une seconde mémoire flash permettant de mémoriser des données à l'exclusion d'un fichier de démarrage, le dispositif de commande comprenant : une unité de sécurité permettant de mémoriser une clé publique du propriétaire ; une unité de lecture permettant de lire des données enregistrées dans la première mémoire flash et la seconde mémoire flash ; une première unité d'enregistrement permettant d'enregistrer, dans la première mémoire flash, uniquement le fichier de démarrage vérifié au moyen de la clé publique mémorisée dans l'unité de sécurité ; et une seconde unité d'enregistrement permettant l'enregistrement dans la seconde mémoire flash.
PCT/KR2017/004410 2016-10-25 2017-04-26 Dispositif de mémorisation comprenant un secteur de démarrage dans lequel seul un propriétaire peut enregistrer Ceased WO2018079960A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US16/344,895 US20190258589A1 (en) 2016-10-25 2017-04-26 Storage device including only owner-writable boot area
CN201780065569.8A CN109863480B (zh) 2016-10-25 2017-04-26 包括只能由所有者记录的引导区的存储器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0139524 2016-10-25
KR1020160139524A KR101886176B1 (ko) 2016-10-25 2016-10-25 소유자만 기록 가능한 부트영역을 포함하는 저장장치

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WO2018079960A1 true WO2018079960A1 (fr) 2018-05-03

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PCT/KR2017/004410 Ceased WO2018079960A1 (fr) 2016-10-25 2017-04-26 Dispositif de mémorisation comprenant un secteur de démarrage dans lequel seul un propriétaire peut enregistrer

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Country Link
US (1) US20190258589A1 (fr)
KR (1) KR101886176B1 (fr)
CN (1) CN109863480B (fr)
WO (1) WO2018079960A1 (fr)

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Publication number Publication date
KR20180045432A (ko) 2018-05-04
US20190258589A1 (en) 2019-08-22
CN109863480B (zh) 2023-11-21
KR101886176B1 (ko) 2018-08-08
CN109863480A (zh) 2019-06-07

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